![]() When reprogramming an engine computer, a scanner is attached to the diagnostic port in a car, which is typically inside the car, beneath the steering wheel. ![]() How reprogramming an engine computer works However, you can flash your car engine yourself – with the right tools. It’s a bountiful cash crop for repair shops, who tend to charge between $80 and $120 for the service, according to Underhood Service. If the programming is optimized, your car’s engine tends to run much more efficiently. This is done on nearly all vehicles 1996 and newer to ensure that the microprocessors in such areas as the power train and fuel injectors are regulating their systems properly. (Photo Credit: CC BY/Scott/Vag-Com Scanning)įlashing - or erasing and reprogramming - your engine’s computer is a legitimate way to keep a car’s engine control modules (ECMs) up to date. ![]() ![]() The plug-in port is typically under the dash. ![]()
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